短文改错。
A painter hang his or her finished picture on a wall, and everyone can se
e it.A composer
writes work, but no one can hear it until it is performing.Professional singers and players have
greater responsibilities, for the composer is utterly independent on them.A student of music
needs as long and as hardly a training to become a performer as a medical student needs to
become a doctor.Most training is concerning with technique, for musicians have to have the
muscular proficiency of an athlete or a ballet dancer.Singers practice to breathing every day,
as his voices would be not beautiful with controlled muscular support.String (弦乐) players
practice moving the finger of the left hand up and down, while drawing the bow to and with
the right hand-two entirely different movements.
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